Is it even possible to onboard the world to #Lightning? Will fees prevent this before we hit 50% adoption?

What % of the world will be able to settle #Bitcoin on chain?

What percent will have #Lightning wallets?

Will there be a remainder that have to use some other solution? Some kind of intermediary? What is the solution to onboarding people in AD 2100 when on-chain fees are unrealistic for average plebs?

I’m a Bitcoin bull, but I’m trying to look ahead.